CFR /  Title 27  /  Part 20  /  Sec. 20.115 Ink general-use formula.

Ink general-use formula is any finished article made with S.D.A. Formula No. 1, 3-A, 3-C, 13-A, 23-A, 30, 32, or 33 which--

(a) Contains sufficient pigments, dyes, or dyestuffs,

(b) May contain other ingredients, and

(c) Is packaged, labeled and sold or used as an ink.